Safety fence support device with flexibility

Abstract

A safety fence support device with flexibility may be provided. More particularly, a safety fence support device with flexibility may be provided which is simply installed on a safety fence used in various sports facilities, e.g., a baseball field, an ice hockey rink, a ski slope, etc., causes the safety fence to be tilted backward even when players playing a game or people enjoying the sports in the sports facilities collide with the safety fence at various angles, thereby preventing injury by mitigating impact applied to a human body through the safety fence, and is used in various sports facilities regardless of the kind of the safety fence by controlling the degree of flexibility for mitigating the impact in accordance with the impact strength.

What is claimed is: 
     
       1. A safety fence support device with flexibility, the support device comprising:
 a pipe-shaped uppercase which has a top surface, a through-hole formed in the center of the top surface, a catching portion formed on a circumferential end of the top surface, a pipe-shaped protrusion extending vertically downward at a predetermined distance from the center of the top surface, and an open bottom surface; 
 a cap which opens and closes the upper case; 
 a pipe-shaped lower case which has an open top surface and an open bottom surface, wherein a lower portion of the upper case is inserted within the open top surface; 
 a lower support which is attached to the bottom surface of the lower case and is fixed to the ground; 
 a first buffer elastic body which is inserted within the upper case, is inserted outside an outer circumferential surface of the protrusion of the upper case, has a top surface contacting the catching portion formed in the upper case, and has a bottom surface contacting a top surface of the lower support; 
 a second buffer elastic body which has a length smaller than that of the first buffer elastic body, is located within the first buffer elastic body, has an upper portion inserted within the protrusion of the upper case, and has a lower portion contacting the top surface of the lower support; 
 a locking washer which is attached to the top surface of the upper case; 
 an adjusting nut which is attached to a top surface of the locking washer and adjusts an initial pressing force of the first buffer elastic body; 
 a screw shaft which has a connecting hook at a lower end thereof, is provided to pass through the centers of the upper case, the locking washer, and the adjusting nut, transfers the adjusting nut, and adjusts and sets the initial pressing force of the first buffer elastic body; and 
 a connection member which is located within the second buffer elastic body, has one end connected to the connecting hook of the screw shaft, and has the other end fixed to a locking pin of a bottom surface of the lower support. 
 
     
     
       2. The safety fence support device with flexibility of  claim 1 , wherein the lower support comprises:
 a lower plate which is attached to the bottom surface of the lower case, has a through-hole formed in the center thereof, wherein the connection member passes through the through-hole, absorbs impact caused by an external force applied to the safety fence at various angles, and is hinge-pivoted together with the upper case, the lower case, and the connection member in a direction of the external force by using a circumferential end thereof as a fulcrum; and 
 a plate receiver which has a through-hole formed in the center thereof, wherein the connection member passes through the through-hole, has a plate receiving recess formed in the center of a top surface thereof, wherein the plate receiving recess receives the lower plate, has a pin groove formed in the center of a bottom surface thereof, wherein the pin groove fixes the connection member, and is fixed to the ground. 
 
     
     
       3. The safety fence support device with flexibility of  claim 1 , further comprising an indication scale formed in a longitudinal direction of the upper case on an outer circumferential surface of one side of the upper case which ascends and descends together with the first buffer elastic body, in order that a pressed or expanded length of the first buffer elastic body is visually checked when the first buffer elastic body is pressed or expanded by tightening or loosening the adjusting nut for the purpose of adjusting and setting the initial pressing force of the first buffer elastic body.